Using gcc 4.3.2-7 on Intel Pentium running Linux Fedora Core 10 with -std=gnu99 of
/* DFP TR 24732 == WG14 / N1176, N1312 */ #define __STDC_WANT_DEC_FP__ /* Tell implementation that we want Decimal FP */ #include <float.h> /* DEC_EVAL_METHOD */ #ifndef DEC_EVAL_METHOD #error Missing DEC_EVAL_METHOD #endif int main(void){ return 0; } gets: . /usr/lib/gcc/i386-redhat-linux/4.3.2/include/float.h test3.c:6:2: error: #error Missing DEC_EVAL_METHOD -- Summary: DEC_EVAL_METHOD missing from <float.h> Product: gcc Version: 4.3.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tydeman at tybor dot com GCC host triplet: 4.3.2 GCC target triplet: 4.3.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39033